结合WDM-PI的多光束发射无线光通信系统性能分析

Performance Analysis of Multi-beam Emission Wireless Optical Communication System Combining WDM and Polarization Interlacing

无线光通信是一种以光信号为载体,通过大气空间传送信息用的数据传输技术。它具有高调制带宽、高数据传输速率、低成本、安装过程简单、体积小、重量轻等优点。为提升通信系统的信道容量,减小信道间非线性效应的影响,将波分复用与偏振交错结合用于多光束发射无线光通信系统中,搭建通信系统,并对通信系统传输性能进行了实验研究,通过信噪比、接收功率灵敏度和眼图来综合评估数据传输性能。实验结果表明,结合波分复用与偏振交错的多光束发射通信系统传输质量优于自由空间直接传输。

Wireless optical communication is a data transmission technology using optical signal as carrier to transmit information through atmospheric space.It has the advantages of high modulation bandwidth,high data transmission rate,low cost,simple installation process,small size and light weight.To enhance the channel capacity of communication system,reduce the influence of the nonlinear effect of the channel,to use WDM combined with polarization cross multiple beam launch wireless optical communication systems,structures,communication system,and transmission performance of communication system has carried on the experimental study,through the signal to noise ratio,the received power sensitivity and eye diagram to comprehensive assessment of the data transmission performance.Experimental results show that the transmission quality of multibeam transmission system combining WDM and polarization interleaving is better than that of free space direct transmission.